bug: pushing and popping views can unmount entering view when done quickly

[FabianTauriello]

Prerequisites

• [X] I have read the Contributing Guidelines.
• [X] I agree to follow the Code of Conduct.
• [X] I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

On the iOS platform, the destination page/route seemingly doesn't render when I navigate quickly between two routes within a tab.

In the repo I have linked below, there is a landing page, and 3 tabs. After the tabs are displayed, I can press the 'go to detail' button on tab 2, navigate back by pressing the 'Back' button, then press the 'go to detail' button again, and the destination page occasionally doesn't render. Most of the time, the app works perfectly fine, and the destination page is rendered, but on occasion, the bug occurs, and the page doesn't render. To trigger the error, I think these steps have to be done very quickly (but they can be done by a human).

Tab 2 home/default page:

What the destination page should look like when the 'go to detail' button is pressed:

What the destination page occasionally looks like when the bug occurs:

Expected Behavior

The app should navigate to the destination page every time, rendering the correct content as seen here:

Steps to Reproduce

1. Build and run the app (https://github.com/FabianTauriello/ionic-demo) on an iOS device or simulator
2. Tap the 'go to tabs' button on the 'Landing' page
3. Tap the Tab 2 button in the bottom tab bar.
4. Tap the 'go to detail' button
5. Tap the 'Back' button
6. Tap the 'go to detail' button again
7. Quickly repeat steps 5 and 6 until the issue occurs. Speed is important here, so these steps should be done quickly to trigger the bug.

Code Reproduction URL

https://github.com/FabianTauriello/ionic-demo

Ionic Info

Ionic:

Ionic CLI : 7.2.0 (/usr/local/lib/node_modules/@ionic/cli) Ionic Framework : @ionic/react 8.0.1

Capacitor:

Capacitor CLI : 6.0.0 @capacitor/android : not installed @capacitor/core : 6.0.0 @capacitor/ios : 6.0.0

Utility:

cordova-res : 0.15.4 native-run : 2.0.1

System:

NodeJS : v18.18.2 (/usr/local/bin/node) npm : 8.5.0 OS : macOS Unknown

Additional Information

• I have only been able to replicate this issue on iOS so far, but it may occur on other platforms (web and Android).
• The console doesn't display any errors when the page fails to render.
• The example repo is using Ionic v8, but I've found that the issue exists for Ionic v7 as well

[FabianTauriello]

I've noticed this issue occurs on Android and web as well.

Also, I think that the isssue is possibly linked to the page/component transitions, because if I set the 'animated' prop in an IonRouterOutlet to false, the issue seems to be fixed.

[thetaPC]

Thank you for submitting the issue! I was able to replicate it on my end.

[Fluffy-the-Destroyer]

I have also encountered this issue on web, when IonRouterOutlet has mode set to ios, by using the browser's forward button or my mouse thumb button to go forward before the animation for going back has finished. On continuing to navigate with the browser buttons, pages load correctly but there is no animation.

[tonye3003]

I'm also encountering this issue using @ionic/react 7.6.1 on iOS and web. I can get it to work properly when disabling animations in the IonRouterOutlet but this is an undesirable workaround.